KR20130031785A - Device for measuring the shape of eyeglasses frame - Google Patents

Abstract

PURPOSE: An eyeglasses frame shape measuring apparatus is provided to have the excellent usability of a template holder without the formation of template holder storage housing and improve the precision of template measurement by measuring a high curve frame with good precision. CONSTITUTION: An eyeglasses frame shape measuring apparatus includes an eyeglass frame maintaining unit(100) having a first slider(102) and a second slider(103) which maintain an eyeglass frame(F), a rim measuring unit and a template holder in which a template or a demonstration lens is mounted. A template measuring unit measures the east longitude information of a measured object by detecting the movement of a measuring axis to an east longitude direction. The template measuring unit has a storage unit formed on the first slider or the second slider for storing the template holder in case of not performing measurement.

Description

Glasses frame shape measuring device {DEVICE FOR MEASURING THE SHAPE OF EYEGLASSES FRAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle frame shape measuring apparatus for measuring the shape of a rim of a spectacle frame, and to a spectacle frame shape measuring apparatus capable of measuring the shape of a template (or a demonstration lens).

A three-dimensional shape of the rim is obtained by moving a spectacle frame holding mechanism for holding the spectacle frame in a state of being scavenged, and a measurer inserted into the groove of the rim (lens range) of the spectacle frame along the groove of the rim, and detecting the movement of the measurer. The spectacle frame shape measuring apparatus provided with a measuring mechanism is known (for example, refer patent document 1, 2).

The spectacle frame holding mechanism is provided with a first slider and a second slider for pressing the left and right rims of the spectacle frame from the vertical direction (the vertical direction at the time of wearing the spectacle frame) to determine the position of the left and right rims in the longitudinal direction. Each slider is provided with a clamp mechanism having clamp pins for clamping the left rim and the right rim, respectively. As the rim of the spectacle frame is clamped by the clamp pin to narrow the interval between the first slider and the second slider, the left and right rims of the spectacle frame are kept in a predetermined state. In this state, the measurer is inserted into the groove of the unilateral rim, and the three-dimensional shape of the rim is measured.

Moreover, in this kind of measuring apparatus, a template (including the case of the demonstration lens attached to the rim of the spectacle frame) can be measured. In the case of the template measurement, a template holder which is a jig for mounting the template is used, the template holder is mounted on a mounting portion formed separately from the eyeglass frame holding mechanism, and the template is set at a predetermined measurement position with respect to the measurement mechanism. The template holder is unnecessary at the time of measuring the spectacle frame, and thus, the template holder is separated from the mounting portion.

In recent years, high-curve frames with large rim deflection have increased. In order to measure the rim of a high curve frame with good precision, the spectacle frame shape measuring apparatus which traces a rim by making the tip (measurement axis) of a measurer incline freely according to the height of the buckling (vertical direction) of a rim is proposed. (For example, refer patent document 3, 4).

Japanese Laid-Open Patent Publication 2000-314617 Japanese Unexamined Patent Publication No. 2011-122899 JP 2001-174252 A Japanese Unexamined Patent Publication No. 2011-122898

In the conventional spectacle frame shape measuring device, the template holder separated from the mounting portion is stored in a different place from the measuring device, or the cover of the measuring device (the spectacle frame shape measuring device is integral with the spectacle lens peripheral edge processing device). When attached, it was stored in the storage part formed in the cover of a processing apparatus. However, in a method of storing the template holder in a different place from the measuring device, the template holder may be lost or may not be immediately taken out at the time of use. The configuration in which the storing place of the template holder is formed on the cover of the measuring device (or processing device) has to be secured in accordance with the problem that the device is enlarged and the storage place must be secured according to the cover of the measuring device or processing device. Needed.

In the measuring mechanism of the template, it is advantageous to combine the measuring shaft for measuring the rim with the measuring shaft which contacts the edge of the template. However, in Patent Document 4 (Japanese Laid-Open Patent Publication No. 2011-122898) in which the measuring shaft is inclined freely, the side in which the measuring shaft is not inclined is brought into contact with the template, so that the traceability of the template trace is more accurate. In order to improve, the mechanism of the apparatus becomes complicated, and the size of the apparatus must be increased. In addition, control of the measurement pressure is complicated. The structure which forms the measuring axis for template measurement exclusively becomes complicated, and a cost becomes high.

This invention makes it a technical subject to provide the spectacle frame shape measuring apparatus with the usability of a template holder, even if the template holder storage place is not provided in the cover of an apparatus, etc. in view of the said conventional apparatus.

In addition, the present invention enables the measurement of the rim of a high curve frame with good accuracy, and also the measurement of the spectacle frame shape that can improve the accuracy of the template measurement without complicating the configuration and increasing the cost even in the template measurement. It is a technical object to provide an apparatus.

In order to solve the above problems, the present invention is characterized by having the following configuration.

[Claim 1]

Glasses frame shape measuring device,

A glasses frame holding unit having a first slider and a second slider for holding the glasses frame,

A rim measuring unit having a measurer inserted into a groove of the rim, and detecting a moving position of the measurer to measure the shape of the rim;

A template holder on which a measurement object of a template or a demonstration lens is mounted;

A template measuring unit having a measuring axis in contact with the edge of the measuring object mounted on the template holder, detecting movement of the measuring axis in the radial direction, and measuring the radial information of the measuring object;

At the time of non-measurement by the said template measuring unit, the accommodating part for accommodating the said template holder has a accommodating part formed in the said 1st slider or a 2nd slider.

[Claim 2]

In the spectacle frame shape measuring apparatus of claim 1,

The first slider and the second slider each have a left rim clamp mechanism having a clamp pin for clamping the left rim, and a right rim clamp mechanism having a clamp pin for clamping the right rim,

At least one slider of the said 1st slider and a 2nd slider is a space formed between the said left rim clamp mechanism and the said right rim clamp mechanism, and has a space in which the upper part of the slider was recessed,

The accommodation portion is formed in the space.

[Claim 3]

In the spectacle frame shape measuring apparatus of claim 1,

The accommodating portion is formed in a space in which the upper left and right centers of the first slider or the second slider are recessed.

[Claim 4]

In the spectacle frame shape measuring apparatus of claim 1,

The template holder has a mounting portion to be mounted to be detachably free.

[Claim 5]

In the spectacle frame shape measuring apparatus of claim 1,

The template holder has a horizontal dimension, a vertical dimension, and a height dimension defined to enter into the horizontal dimension, the vertical dimension, and the vertical height dimension of the storage portion.

[Claim 6]

In the spectacle frame shape measuring apparatus of claim 1,

The rim measuring unit,

A measurer holding unit having a measurer shaft mounted on the measurer and holding the measurer shaft in a tiltable direction in the tip direction of the measurer;

An inclination angle detection unit for detecting an inclination angle of the measuring shaft;

A moving unit for moving the measurer holding unit two-dimensionally in the radial direction of the rim;

Having a rotating unit for rotating the meter holding unit about an axis perpendicular to the radial direction,

And the said rim measuring unit is combined with the template measuring unit, and the said measuring axis | shaft is used as the said measuring axis which contacts the edge of a measurement object,

Glasses frame shape measuring device further

A measurement mode selection unit for selecting the rim measurement mode and the template measurement mode;

A control unit for controlling the rotating unit and the moving unit so as to contact the edge of the object to be measured as a back surface of the measuring arm axis in the template measuring mode;

And a calculation unit for obtaining eastward information of the measurement object based on the position information in the radial direction of the measurer holding unit, the rotation information of the rotating unit, and the detection information of the inclination angle detection unit,

The rotating unit is configured such that the inclination of the measuring shaft keeps vertical when the back surface of the measuring shaft contacts the edge of the measuring object based on the information after the measurement has been started after the measurement is started in the template measuring mode. And control the mobile unit.

[Claim 7]

In the eyeglass frame shape measuring apparatus of claim 6,

The calculation unit corrects the positional information in the radial direction of the measurer holding unit based on the inclination angle detected by the inclination angle detecting unit to obtain the longitude information of the measurement object.

[Claim 8]

The eyeglass frame shape measuring apparatus according to claim 6, further comprising:

A first measuring pressure applying mechanism for applying a measuring pressure so that the measuring shaft is inclined in the tip direction of the measuring instrument in the rim measuring mode;

A second measurement pressure applying mechanism for applying a measurement pressure such that the back surface of the measurement shaft is inclined to the edge side of the measurement object in the template measurement mode;

And a switching unit for switching the first measuring pressure applying mechanism and the second measuring pressure applying mechanism.

[Claim 9]

In the eyeglass frame shape measuring apparatus of claim 6,

The control unit stops the measurement operation of the template measuring unit when the inclination angle detected by the inclination angle detection unit exceeds a predetermined range.

According to the present invention, the usability of the template holder can be improved even if the template holder storage place is not provided in the cover of the apparatus or the like. In addition, it is possible to improve the accuracy of the template measurement without complicating the configuration and increasing the cost even in the template measurement while enabling the measurement of good accuracy of the high curve frame.

1 is an external view of an eyeglass frame shape measuring apparatus.
2A is a schematic configuration diagram of a template holder, and a perspective view of the surface of the template holder.
2B is a schematic configuration diagram of the template holder, and a perspective view of the back surface of the template holder.
3 is a top view of the frame holding unit with the spectacle frame held.
4 is a perspective view of the frame holding unit at the time of template measurement.
5 is a top view of the frame holding unit in a state where the frame F is not held.
6 is a configuration diagram of a clamp mechanism.
FIG. 7 is a cross-sectional view taken along line BB in FIG. 5. FIG.
8 is a schematic configuration diagram of a moving mechanism of the measuring unit.
9 is an overall perspective view of the meter holding unit.
10 is an explanatory diagram of a vertical tilt maintaining unit.
11A is an explanatory diagram of a vertical tilt maintaining unit.
11B is an explanatory diagram of a vertical tilt maintaining unit.
12 is a control block diagram of the apparatus.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing. 1 is an external view of an eyeglass frame shape measuring apparatus. The spectacle frame shape measuring device 1 inserts a measurer into the frame holding unit 100 for holding the spectacle frame F in a desired state and the groove of the rim of the spectacle frame held by the frame holding unit 100. And a measuring unit 200 for measuring the three-dimensional shape of the rim (bead shape) by detecting the movement of the measurer. The cover of the measuring device 1 has an opening window 2, and a frame holding unit 100 is disposed below the opening window 2. In addition, a mounting portion 300 for freely attaching and detaching the template holder 310 used when measuring the measurement object TP (hereinafter abbreviated as template TP) of the demonstration lens attached to the template or spectacle frame. ) Is disposed behind the left and right centers of the apparatus 1. The measuring unit 200 which is a rim measuring unit serves as a template measuring unit for measuring the template TP attached to the template holder 310.

In the front side of the casing of the apparatus 1, the switch part 4 which has a switch etc. for a measurement start is arrange | positioned. In the rear side of the casing of the apparatus 1, the panel part 3 which has a touch panel type display is arrange | positioned. In the peripheral edge processing of the spectacle lens, the panel portion 3 inputs the layout data of the lens to the bead data, the processing conditions of the lens, and the like. The three-dimensional shape data of the rim obtained by the apparatus 1 and the data input from the panel portion 3 are transmitted to the spectacle lens peripheral edge processing apparatus. Moreover, the apparatus 1 may be set as the structure attached to the spectacle lens peripheral edge processing apparatus similarly to Unexamined-Japanese-Patent No. 2000-314617.

FIG. 2 is a schematic configuration diagram of the template holder 310, FIG. 2A is a perspective view of the surface of the template holder 310, and FIG. 2B is a perspective view of the back surface of the template holder 310. The template holder 310 has a main body 311 and a mounting surface 340 for mounting to the mounting portion 300 at one end in the longitudinal direction of the main body 311. The mounting surface 340 is provided with a magnet 341 and two pins 342 that fit into holes formed in the mounting portion 300 side. As shown to FIG. 2A, the insertion hole 331 for attaching the base of the cup CU fixed to the surface of the demonstration lens is formed in the surface side of the main-body part 311. As shown in FIG. At the other end of the main body 311 in the longitudinal direction, the press-fitting member is always elastically supported on the side away from the main body 311 by a spring (not shown) disposed inside the main body 311. 314 is disposed. In the state where the press-fit member 314 is press-fitted to the main body portion 311 side, the base of the cup CU is attached to the insertion hole 331, and the press-fit member 314 is returned to its original state, whereby the template holder 310 The demo lens is maintained.

On the back side of the main body 311, as shown in FIG. 2B, the center pin 323 inserted into the center hole which the template TP has, and the two small holes inserted into the two small holes which the template TP has The pin 321 is formed. The central pin 323 is fixed to the indentation member 314 and moves with the indentation member 314. In the state where the press-fit member 314 is press-fitted to the main body portion 311 side, the center hole of the template TP is inserted into the center pin 323 and the small hole of the template TP is inserted into the small pin 321. After that, the press-fit member 314 is returned to its original state, so that the template TP is held by the template holder 310.

3 is a top view of the frame holding unit 100 in a state where the spectacle frame F is held. The left-right direction on FIG. 3 is made into the X direction, and the vertical direction is made into the Y direction. The longitudinal direction of the rim of the spectacle frame F becomes the XY direction. The vertical direction orthogonal to the XY direction is taken as the Z direction. Below, the up-down direction of the apparatus 1 becomes a vertical direction (Z direction) (it refers to the vertical direction of the state in which the eyeglass frame F was mounted to the wearer).

The measurement unit 200 is provided below the frame holding unit 100. On the holding part base 101, the 1st slider 102 and the 2nd slider 103 for holding the eyeglass frame F substantially horizontal are mounted. The first slider 102 has a first surface 1021 abutting the upper side in the longitudinal direction of the left rim RIL and the right rim RIR of the frame F. As shown in FIG. The second slider 103 has a second surface 1031 which abuts on the lower side in the longitudinal direction of the left rim RIL and the right rim RIR. The first surface 1021 and the second surface 1031 face each other.

The first surface 1021 of the first slider 102 and the second surface 1031 of the second slider 103 are the directions in which the quantum spacing is opened and closed (the direction in which the quantum spacing is widened and the direction in which the quantum spacing is narrowed). ) Is held by the opening and closing movement mechanism 110 so as to be movable. The opening and closing movement mechanism 110 includes two guide rails 1101 disposed on the left and right sides of the holding part base 101 and extending in the Y direction, two pulleys 1105 arranged in the Y direction on the left side in FIG. 3, and A spring 1110 which is always elastically supported in the direction of narrowing the gap between the pulley 1107, the wire 1109 spanning the two pulleys 1105, 1107, and the first slider 102 and the second slider 103 ( 5). 3, the right end part 102E of the 1st slider 102 is attached to the left side of the wire, and the right end part 103E of the 2nd slider 103 is attached to the right side of the wire. By the opening-closing movement mechanism 110 which has these structures, the 1st slider 102 and the 2nd slider 103 are the direction which the quantum space | interval widens, and the quantum space | interval becomes narrow centering on the centerline LX between them, It remains movable in the losing direction. When one of the first slider 102 and the second slider 103 is moved, the other is also moved in conjunction.

4 is a perspective view of the frame holding unit 100 at which the template holder 310 is attached to the mounting portion 300 and at the time of template measurement. 5 is a top view of the frame holding unit 100 in a state where the frame F is not held by the first slider 102 and the second slider 103.

In the first slider 102, the upper side of the left rim RIL and the right rim RIR of the spectacle frame F (the upper and lower sides of the rim refers to the upper and lower sides in the longitudinal direction at the time of wearing glasses) from the thickness direction thereof. Clamp pins 230a and 230b for clamping are arranged at two points each. Similarly, clamp pins 230a and 230b for clamping the lower side of the left rim RIL and the right rim RIR from the thickness direction are also arranged at two points in the second slider 103, respectively. Two clamp pins 230a and 230b disposed at two points on the first slider 102 side are disposed to protrude from the first surface 1021 to the second slider 103 side, respectively. Clamp pins 230a and 230b disposed at two points on the second slider 103 side also protrude from the second surface 1031 to the first slider 102 side.

FIG. 6: is a block diagram of the clamp mechanism 2300 arrange | positioned at the left side of the 1st slider 102 in order to clamp the upper side of the left rim RIL. The base plate 2301 is disposed inside the first slider 102. The clamp pin 230a is attached to the tip of the first arm 2303. The center part of the 1st arm 2303 is rotatably hold | maintained by the rotating shaft 2304 with respect to the base board 2301. The clamp pin 230b is attached to the tip of the second arm 2305. The center part of the 2nd arm 2305 is hold | maintained rotatably with the rotating shaft 2306 with respect to the base board 2301. A compression spring 2307 is attached between the first arm 2303 and the second arm 2305. The compression spring 2307 is elastically supported in the direction in which the gap between the two clamp pins 230a and 230b is always widened. Moreover, the gear 2309 centered on the rotating shaft 2304 is formed in the center part of the 1st arm 2303. As shown in FIG. Similarly, the gear 2311 centered on the rotating shaft 2306 is formed at the center of the second arm 2305, and the gear 2309 is meshed with the gear 2311.

One end of the spring 2313 is attached to the rear end of the first arm 2303. The wire 2315 is fixed to the other end of the spring 2313. The wire 2315 is connected to the drive unit 2320 via the pulley 2317 rotatably attached to the base plate 2301. The drive unit 2320 has a shaft 2321 for winding the wire 2315, and a motor 2232 for rotating the shaft 2321. When the wire 2315 is tensioned by the driving of the motor 2322, the first arm 2303 is rotated counterclockwise about the rotation shaft 2304. At this time, the gear 2309 and the gear 2311 mesh with each other so that the second arm is rotated clockwise about the rotation shaft 2306. As a result, the two clamp pins 230a and 230b interlock with each other and the rim RIL is clamped by the two clamp pins 230a and 230b.

In order to clamp the upper side of the right rim RIR, the clamp mechanism disposed on the right side of the first slider 102 is configured to invert left and right sides of the clamp mechanism 2300. Moreover, in order to clamp the lower side of the left rim RIL and the right rim RIR, the clamp mechanism arrange | positioned at the two points of the left side and the right side of the 1st slider 102 is arrange | positioned at the 1st slider 102 For the clamp mechanism 2300, the longitudinal direction is the same as that inverted. Therefore, description of another clamp mechanism is abbreviate | omitted. In addition, although the motor 2232 and the shaft 2321 may be the structure arrange | positioned at the clamp mechanism 2300 of four places, respectively, the structure commonly used in the clamp mechanism 2300 of four points may be sufficient. In either case, the four clamp pins 230a and 230b are configured to open and close at the same time.

FIG. 7: is B-B sectional drawing of the left and right centerline LY in FIG. As shown in FIGS. 3-5, the accommodating part 1024 as a storage space (concave part) for accommodating (storing) the template holder 310 is formed in the upper left and right center of the 1st slider 102. As shown in FIG. It is. The storage part 1024 is the clamp mechanism 2300 for the left rim clamp arrange | positioned at the left side of the 1st slider 102, and the right rim arrange | positioned at the right side of the 1st slider 102, as shown in FIG. It is formed in the center between the clamp mechanisms 2300 for clamps. As shown in FIG. 5, the horizontal dimension WL2 in the horizontal direction of the storage portion 1024 is formed larger than the horizontal dimension WL1 of the template holder 310. The longitudinal dimension DL2 of the storage part 1024 is formed larger than the longitudinal dimension DL1 of the template holder 310. In addition, the height dimension HL2 in the vertical direction of the storage portion 1024 is formed larger than the height dimension HL1 of the template holder 310. In other words, in the configuration of the first slider 102, the horizontal dimension of the storage portion 1024 secured between the clamp mechanism 2300 for the left rim clamp and the clamp mechanism 2300 for the right rim clamp ( The transverse dimension WL1, the longitudinal dimension DL1, and the height dimension HL1 of the template holder 310 are set to enter the WL2, the longitudinal dimension DL2, and the height dimension HL2. In addition, the storage part 1024 may be formed between the clamp mechanism 2300 for left rim clamps and the clamp mechanism 2300 for right rim clamps on the second slider 103 side.

Thus, by forming the accommodating part 1024 in the 1st slider 102 (or the 2nd slider 103), the peripheral edge of the spectacle lens in which the casing (or the measuring device 1) of the measuring device 1 was integrally formed. It is not necessary to form the storage place of the template holder 310 in the casing of the processing apparatus. In addition, at the time of use of the template holder 310, the operator can immediately know where the template holder 310 exists, and can easily take out the template holder 310, and the usability of the template holder 310 is good. The measuring device 1 can be provided.

Next, the structure of the measuring unit 200 is demonstrated. 8 is a schematic configuration diagram of a movement mechanism in the XYZ direction of the measurement unit 200. The measuring unit 200 includes a base portion 211 having a square-shaped frame extended in the horizontal direction (XY direction) and a measurer 281 inserted into a groove of the rims RIL and RIR. And a measuring unit holding unit 250 holding the mounted measuring unit shaft 282 and a moving unit 210 for moving the measuring unit holding unit 250 in the XYZ direction. The base portion 211 is disposed below the frame holding unit 100. The moving unit 210 includes a Y moving unit 230 for moving the measurer holding unit 250 in the Y direction, an X moving unit 240 for moving the Y moving unit 230 in the X direction, and a measurer holding unit. It has the Z moving unit 220 which moves 250 to a Z direction. The Y moving unit 230 includes a guide rail extending in the Y direction, and moves the measurer holding unit 250 along the guide rail in the Y direction by driving the motor 235. The X moving unit 240 includes a guide rail 241 extending in the X direction, and moves the Y moving unit 230 in the X direction by driving the motor 245. The Z moving unit 220 is mounted to the Y moving unit 230, and moves the measurer holding unit 250 in the Z direction along the guide rail 221 extending in the Z direction by the drive of the motor 225. Let's do it.

The structure of the measurer holding unit 250 is demonstrated based on FIG. 9, FIG. 10, FIG. 11A, and FIG. The measurer holding unit 250 keeps the measurer axis 282 mounted on the upper end of the measurer 281 so as to be movable in the vertical direction (Z direction), and focuses on the point set below the measurer axis 282. Thus, the vertical tilt holding unit (hereinafter referred to as VH unit) 280 for holding the measuring axis 282 inclined in the tip direction (hereinafter referred to as the direction H) of the measuring instrument 281 and the VH unit 280 in the Z direction It is provided with a rotating unit 260 for rotating around the axis (LO) extending to. The calibrator 281 has a needle-shaped tip shape. Thereby, the measuring part 281 becomes easy to be inserted in the groove | channel of a rim even when it is inclined.

9 is an overall perspective view of the measurer holding unit 250. The rotation unit 260 is provided with the rotation base 261 holding the VH unit 280, and the motor 265 which rotates the rotation base 261. The rotation base 261 holding the VH unit 280 is held by the Z-moving base 222 so as to be rotatable about the axis LO. The Z moving keeper 222 is guided to the guide rail 221 shown in FIG. 8, and is moved in the Z direction by the drive of the motor 225. The rotation base 261 is rotated about the axis | shaft LO by the drive of the motor 265 through rotation transmission mechanisms, such as a gear. The rotation angle of the rotation base 261 is detected by the encoder 266 attached to the rotation shaft of the motor 265.

10, 11A, and 11B are explanatory diagrams of a configuration of the VH unit 280. A guide shaft 263 extending in the Z direction is fixed to the lower surface of the flange 262 integrally formed with the rotation base 261. The Z moving holder 270 of the VH unit 280 is fixed to the cylindrical member 264 passed through the guide shaft 263. The VH unit 280 is held so as to be movable in the Z direction along the guide shaft 263 via the Z moving holder 270 and the cylindrical member 264. The VH unit 280 is provided with a spring (elastic support member) 267 between the flange 262 and the cylindrical member 264 in order to reduce the load or balance the load. The moving position of the VH unit 280 in the Z direction (moving position in the Z direction relative to the rotation base 261) is detected by the encoder 268 which is a position detector (see FIG. 11A).

FIG. 11B is an explanatory diagram of the VH unit 280 in a state in which the rotating base 261, the flange 262, and the like are removed, and is an explanatory diagram of the VH unit 280 seen from the inner side of the ground with respect to FIG. 10. FIG. 11B is an explanatory diagram of the VH unit 280 in a state where the measuring shaft 282 and the like are removed from FIG. 11A. The measuring shaft 282 is held in such a manner as to be capable of tilting in the H direction about the axis S1 (point) via a bearing 271 held above the Z-moving stopper 270. Below the measuring shaft 282, the rotation angle detection plate 283 is mounted via the mounting member 284. The inclination angle (rotation angle) of the measuring axis 282 about the axis S1 in the H direction is detected by the encoder 285 which is a rotation angle detector via the rotation angle detection plate 283.

Moreover, in order to limit the inclination to the front-end | tip direction of the measuring device 281, the limiting member 291 which abuts on the left end of the mounting member 284 is attached to the rotating plate 292 on FIG. 11A. Moreover, as shown in FIG. 10, the spring (elastic support member) 290 as a 1st measurement pressure provision mechanism for giving a measurement pressure to the front-end | tip direction of the measurer 281 is equipped with the mounting plate 284 and a cylindrical member. 264 is disposed between. By the spring 290, the elastic support force (measurement pressure) can always be applied so that the measuring shaft 282 may incline in the tip direction Hf of the measuring member 281. In the initial state at the time of the measurement of the rim, as the mounting member 284 contacts the limiting member 291, the inclination of the measuring shaft 282 is limited to the state of FIG. 11B. This initial state is a state in which the measuring axis 282 is inclined with respect to the Z axis of the vertical axis by a predetermined angle (2 degrees) in the direction Hf opposite to the leading direction of the measuring element 281. The rotating plate 292 is rotatably axially rotated in the counterclockwise direction (in the direction of the arrow C1) on FIG. 11B about the point 292 below the Z moving stopper 270. The rotation of the rotating plate 292 in the clockwise direction is limited by the not shown limiting member. And by the spring (elastic support member) 293 as a 2nd measuring pressure provision mechanism arrange | positioned between the Z movement keeper 270 and the rotating plate 292, the rotating plate 292 always rotates clockwise on FIG. 11B. An elastic bearing force (measured pressure at the time of template measurement) can be applied to rotate. The elastic support force of the spring 293 is larger than the elastic support force of the spring 290. Thereby, in the initial state at the time of the measurement of the rim and the template TP, the measuring shaft 282 maintains the state of FIG. 11A. However, at the time of measuring the template TP, the back surface 282a of the measuring shaft 282 (the surface located in the Hr direction opposite to the distal direction of the measuring member 281) is in contact with the edge of the template TP. The VH unit 280 is moved in the Hr direction by the moving unit 210 controlled by the control unit 50, so that the measuring axis 282 is inclined in the Hf direction with the axis S1 as a supporting point. By the inclination of the measuring shaft 282 in the Hf direction, the mounting member 284 located below the measuring shaft 282 press-fits the limiting member 291, and the rotating plate 292 moves in the direction of the arrow C1. Is rotated. At this time, the measurement pressure in the Hr direction can be applied to the back surface 282a of the measuring shaft 282 by the spring 293. With such a configuration, the switch from the first measuring pressure applying mechanism to the second measuring pressure applying mechanism is performed at the time of the template measurement.

In addition, the measuring shaft 282 (back surface 282a) is used as a measuring shaft which makes contact with the edge of the template TP. For this reason, the measuring shaft 282 is comprised so that it may incline to 2-5 degree | times further in a Hf direction with respect to a vertical direction (Z direction).

12 is a control block diagram of the apparatus 1. The control unit 50 is connected to the motors 225, 235, 245, 265, the encoders 268, 285, the panel unit 3, and the switch unit 4.

Next, the operation of the apparatus 1 having the above configuration will be described. First, the measurement operation of the rim of the frame F will be described. By the measurement mode selection switch (measurement mode selection means) arranged in the switch section 4, the rim measurement mode and the template measurement mode can be selected. In addition, as shown in FIG. 4, when the template holder 310 is mounted to the mounting portion 300 as shown in FIG. 4 while the first slider 102 and the second slider 103 are open, the first slider 102 In contact with the template holder 310, movement to the front side (operator side) immediately before the first slider 102 is limited. When this state is detected by a detector (not shown), the measurement mode is automatically selected as the template measurement mode, and when the first slider 102 and the second slider 103 are closed than the state of FIG. 4, the rim measurement mode. The configuration may be selected automatically.

In the rim measurement mode, in the measurement of the radial direction of the rim RRI, the controller 50 determines the XY position for moving the measurer holding unit 250 based on the eastward information of the rim on which the measurement is completed, and determines the determined XY. The driving of each motor of the moving unit 210 is controlled according to the position. Preferably, the control unit 50 predicts the change in the longitude of the unmeasured portion of the rim based on the longitude information of the measured rim and moves the tip of the measurer 281 according to the change in the longitude of the unmeasured portion. The XY position for moving the holding unit 250 is determined.

The control part 50 moves the meter holding | maintenance unit 250 located in an initial position to an XYZ direction based on the measurement start signal input by the switch part 4, and is hold | maintained by clamp pins 230a and 230b. The tip of the calibrator 281 is inserted into the groove of the measured starting position of the rim RIR (position cranked by the clamp pins 230a and 230b of the second slider 103). It is detected that the encoder 285 detects that the measuring axis 282 is inclined 5 degrees in the Hr direction in which the tip of the measuring member 281 is inserted with the groove of the rim RRI.

The control part 50 makes the diameter of the rim RRI change in the X direction at the time of a measurement start, and moves the measuring device holding unit 250 to the X direction. The calibrator shaft 282 is inclined so that the tip of the calibrator 281 is moved in accordance with the change in the rim of the rim. By detecting the inclination angle of the measuring shaft 282 by the encoder 285, XY position information of the tip of the measuring instrument 281 with respect to the reference position of the measuring instrument holding unit 250 is obtained. The radial information of the rim is obtained by the XY position information and the drive information of the motors 235 and 245 for XY moving the measurer holding unit 250.

The control unit 50 obtains the next measurement based on the Tokyo information on which the measurement is completed, when the Tokyo information of the predetermined number of measurement points (for example, five points is determined by measuring the whole point by 1000 points) is obtained from the measurement start. The change of the point (unmeasured point) is predicted and the measurer holding unit 250 is moved in the XY direction so that the measurer 281 follows the rim RRI based on the result. Moreover, the control part 50 controls the drive of the motor 265, and rotates the rotation base 261, and rotates the VH unit 280 centering around the axis | shaft LO. The rotation angle at this time is determined so that the tip direction of the measurer 281 becomes the normal direction with respect to the radial change of the predicted rim. Alternatively, the rotation angle is determined as a tilt angle around the reference point (the point on the center line LX in FIG. 3 in the Y direction of the measurement start point) at the start of the measurement of the rim. Alternatively, the rotation angle is determined as an angle between the east angle at the reference point at the start of measurement and the normal direction to the eastward change of the rim. By repeating this operation, the longitude information around the entire rim is measured.

The position in the Z direction from the start of the measurement of the rim follows the change in the Z direction of the rim so that the measuring axis 283 is moved in the Z direction together with the measurer 281. By detecting the movement position in the Z direction of the measuring shaft 282 by the encoder 268, Z position information of the measuring shaft 282 with respect to the reference position of the measuring holder holding unit 250 is obtained. Z position information of the rim is obtained by the Z position information and the drive information of the motor 225 for Z-moving the measurer holding unit 250.

The controller 50 predicts the Z position change of the next measurement point (unmeasured point) based on the Z position information on which the measurement is completed, when the Z position information of the predetermined number of measurement points (5 point number) is obtained from the start of measurement. Based on the result, the meter holding unit 250 is moved in the Z direction so that the meter 281 follows the rim. In addition, when the rim is bent upward from the measurement start point (when the Z position of the non-measured point is increased in the upward direction), the control unit 50 determines the measuring shaft 282 according to the height of the Z position. The measuring device holding unit 250 is XY-moved so as to incline greatly in the Hr direction. As a result, the direction of the tip of the measurer 281 is inclined according to the inclination of the rim RIR. Therefore, even when measuring the rim of the high curve frame, the measurer 281 does not easily deviate from the rim, so that the high curve frame can be measured with good accuracy. By repeating this operation, Z position information of the entire rim is measured.

Next, the measurement operation of the template TP will be described. After the operator attaches the template holder 310 to the mounting portion 300 in a predetermined state, the operator selects the template measurement mode with the switch of the switch portion 4 (or automatically selects the template measurement mode), and the measurement start switch. Press to start the measurement of the template TP. The control part 50 moves the measuring device holding | maintenance unit 250 located in an initial position to an XY direction so that the edge position of the template TP on center line LX (refer FIG. 3) is a measurement start point. Moreover, at the measurement start point, the control part 50 is made so that the back surface 282a of the measuring shaft 282 located in the opposite direction (Hr direction) from the front-end | tip of the measuring device 281 may face the edge of the template TP. The drive of the motor 265 of the rotating unit 260 is controlled to rotate the measurer holding unit 250.

In addition, the VH unit 280 is located at the lowest point with respect to the measurer holding unit 250 in the initial state, and the Z position of the VH unit 280 is the center height of the template TP held by the template holder 231, The distance of the axis S1 which is the inclination center of the measuring shaft 282 is set so that it may become a predetermined distance (40 mm).

By the movement to the template TP side of the measurer holding unit 250, the back surface 282a of the measurer shaft 282 contacts the edge of the template TP and measures the measurer holding unit 250 toward the template TP side. When this is moved, the measuring shaft 282 is inclined in the Hf direction in response to the elastic bearing force of the spring 293. The inclination angle of the measuring axis 282 in the Hf direction is detected by the encoder 285. When the measuring shaft 282 is in the vertical direction (consistent with the Z direction), the controller 50 stops the movement to the template TP side of the measuring member holding unit 250, and starts the measurement from this time point.

In the measurement of the template TP, the controller 50 controls the XY position of the measurer holding unit 250 so that the measuring axis 282 is positioned in the vertical direction based on the Tokyo information on which the measurement of the template TP is completed. The rotation angle of the rotation unit 260 is determined to control the driving of the moving unit 210 and the rotation unit 260. Preferably, the controller 50 predicts a change in the diameter of the unmeasured portion of the template TP based on the diameter information of the template TP on which the measurement is completed, and measures the measuring axis 282 according to the change in the diameter of the unmeasured portion. ), The XY position of the measurer holding unit 250 and the rotation angle of the rotating unit 260 are determined so as to move in the state of being kept vertical.

The control part 50 makes the diameter of the template TP change in the Y direction at the time of a measurement start, and moves the measuring device holding unit 250 to the Y direction. If the diameter of the actual template TP is changed with respect to the direction in which the diameter of the template TP is intended (Y direction at the start of measurement), the measuring axis 282 follows the change and the measuring axis 282 is in the H direction (Hr or Hf direction), and it shifts with respect to a vertical direction. The inclination angle of the measuring axis 282 with respect to the vertical direction is detected by the encoder 285. When the measuring shaft 282 is kept vertical, the radial information of the template TP is obtained as the XY position information of the measuring member holding unit 250. When the measuring shaft 282 is inclined with respect to the vertical direction, , Correct that much.

Assuming that the inclination angle of the measuring shaft 282 with respect to the vertical direction is α, and the distance from the height center of the template to the tilting center of the measuring shaft 282 (axis S1) and L, the radius correction amount ΔR of the mirror is

ΔR = L × sinα

. This calculation is performed by the controller 50. The control part 50 obtains the diameter information of the template TP based on this correction calculation and the drive information of the motors 235 and 245 which XY move the measurer holding unit 250.

In addition, depending on the difference in the thickness of the template TP (in the case of the demo lens, the difference in the height position of the edge), the point at which the template TP contacts the back surface 282a of the measuring shaft 282 slightly shifts. This is within the allowable error in the template measurement, and the practical precision is secured.

The controller 50 predicts the change of the next measurement point (unmeasured point) on the basis of the Tokyo information on which measurement is completed, when the Tokyo information of the predetermined measurement point number (5 point number) is obtained from the start of measurement, and as a result Based on the above, the measurer holding unit 250 is moved in the XY direction so as to follow the edge of the template TP in a state where the measurer shaft 282 is kept vertical. Moreover, the control part 50 controls the drive of the motor 265, rotates the rotation base 261, and rotates the VH unit 280. FIG. The rotation angle at this time is determined so that the back surface 282a of the measuring shaft 282 becomes a normal direction with respect to the diameter of the template TP. Alternatively, the rotation angle is determined as a mirror angle based on the holding center of the template holder 310. Alternatively, the rotation angle is determined as an angle between the east angle based on the holding center of the template holder 310 and the normal direction to the eastward change of the rim. By repeating this operation, the longitude information of the entire rim is measured. By repeating such an operation, the longitude information of the entire circumference of the template TP is measured.

In addition, during the measurement of the template, the controller 50 may trace when the inclination angle of the measuring shaft 282 detected by the encoder 285 deviates from the prescribed range (for example, 0.5 degree) with respect to the vertical direction. It is determined that the shape is not possible, and the template measurement is stopped, and the warning is issued by the warning device (display 3). The untraceable shape is unevenness having a diameter smaller than the radius of the measuring axis 282.

As described above, in order to measure the rim RIR (RIL) of the high-curve frame with good accuracy, the back surface 282a of the measuring shaft 282 also in a configuration in which the measuring shaft 282 is inclined along the height of the rim. (The surface on the opposite side to the tip direction of the measurer 281) can be used as the measurement surface for contacting the edge of the template TP. By this structure, the movement mechanism for rim measurement and a detection mechanism are shared, and the precision of a template trace can be improved. In addition, since the measuring axis for the template traces does not have to be formed exclusively, the complexity and cost of the configuration can be avoided.

Claims (9)

Glasses frame shape measuring device,
A glasses frame holding unit having a first slider and a second slider for holding the glasses frame,
A rim measuring unit having a measurer inserted into a groove of the rim, and detecting a moving position of the measurer to measure the shape of the rim;
A template holder on which a measurement object of a template or a demonstration lens is mounted;
A template measuring unit having a measuring axis in contact with the edge of the measuring object mounted on the template holder, detecting movement of the measuring axis in the radial direction, and measuring the radial information of the measuring object;
An eyeglass frame shape measuring apparatus having an accommodating portion for accommodating the template holder at the time of non-measurement by the template measuring unit, the accommodating portion formed in the first slider or the second slider. The method of claim 1,
The first slider and the second slider each have a left rim clamp mechanism having a clamp pin for clamping the left rim, and a right rim clamp mechanism having a clamp pin for clamping the right rim,
At least one slider of the said 1st slider and a 2nd slider is a space formed between the said left rim clamp mechanism and the said right rim clamp mechanism, and has a space in which the upper part of the slider was recessed,
The storage part is a spectacle frame shape measuring device formed in the space. The method of claim 1,
The storage unit is a spectacle frame shape measuring apparatus which is formed in a space in which the upper left and right centers of the first slider or the second slider are recessed. The method of claim 1,
An eyeglass frame shape measuring apparatus having a mounting portion to be mounted so that the template holder is detachably attached. The method of claim 1,
The said template holder has the horizontal dimension, the vertical dimension, and the height dimension determined so that it may be set to the dimension of the left-right direction of the said accommodating part, the dimension of a vertical direction, and the height dimension of a vertical direction. The method of claim 1,
The rim measuring unit,
A measurer holding unit having a measurer shaft mounted on the measurer and holding the measurer shaft in a tiltable direction in the tip direction of the measurer;
An inclination angle detection unit for detecting an inclination angle of the measuring shaft;
A moving unit for moving the measurer holding unit two-dimensionally in the radial direction of the rim;
Having a rotating unit for rotating the meter holding unit about an axis perpendicular to the radial direction,
And the said rim measuring unit is combined with the template measuring unit, and the said measuring axis | shaft is used as the said measuring axis which contacts the edge of a measurement object,
Glasses frame shape measuring device further
A measurement mode selection unit for selecting the rim measurement mode and the template measurement mode;
A control unit for controlling the rotating unit and the moving unit so as to contact the edge of the object to be measured as a back surface of the measuring arm axis in the template measuring mode;
And a calculation unit for obtaining eastward information of the measurement object based on the position information in the radial direction of the measurer holding unit, the rotation information of the rotating unit, and the detection information of the inclination angle detection unit,
The rotating unit is configured such that the inclination of the measuring shaft keeps vertical when the back surface of the measuring shaft contacts the edge of the measuring object based on the information after the measurement has been started after the measurement is started in the template measuring mode. And an eyeglass frame shape measuring device for controlling the moving unit. The method according to claim 6,
And the calculation unit corrects the positional information in the radial direction of the measurer holding unit based on the inclination angle detected by the inclination angle detecting unit to obtain the longitude information of the measurement object. The method of claim 6, further comprising
A first measuring pressure applying mechanism for applying a measuring pressure so that the measuring shaft is inclined in the tip direction of the measuring instrument in the rim measuring mode;
A second measurement pressure applying mechanism for applying a measurement pressure such that the back surface of the measurement shaft is inclined to the edge side of the measurement object in the template measurement mode;
An eyeglass frame shape measuring apparatus having a switching unit for switching the first measuring pressure applying mechanism and the second measuring pressure applying mechanism. The method according to claim 6,
And the control unit stops the measurement operation of the template measuring unit when the inclination angle detected by the inclination angle detection unit exceeds a predetermined range.

Images